1/*
2 * Check decoding of pkey_mprotect syscall.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include "tests.h"
31#include <asm/unistd.h>
32#include "scno.h"
33
34#ifdef __NR_pkey_mprotect
35
36# include <stdio.h>
37# include <unistd.h>
38# include <sys/mman.h>
39
40const char *
41sprintptr(kernel_ulong_t ptr)
42{
43	static char buf[sizeof(ptr) * 2 + sizeof("0x")];
44
45	if (ptr)
46		snprintf(buf, sizeof(buf), "%#llx", (unsigned long long) ptr);
47	else
48		return "NULL";
49
50	return buf;
51}
52
53int
54main(void)
55{
56	static const kernel_ulong_t ptrs[] = {
57		0,
58		(kernel_ulong_t) 0xfacebeef00000000ULL,
59		(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
60	};
61	static const kernel_ulong_t sizes[] = {
62		0,
63		(kernel_ulong_t) 0xfacebeef00000000ULL,
64		(kernel_ulong_t) 0xfedcba9876543210ULL,
65		(kernel_ulong_t) 0x123456789abcdef0ULL,
66		(kernel_ulong_t) 0xbadc0dedda7a1057ULL,
67	};
68	static const struct {
69		kernel_ulong_t val;
70		const char *str;
71	} prots[] = {
72		{ ARG_STR(PROT_READ) },
73		/* For now, only 0x0300001f are used */
74		{ (kernel_ulong_t) 0xdeadfeed00ca7500ULL,
75			sizeof(kernel_ulong_t) > sizeof(int) ?
76			"0xdeadfeed00ca7500 /* PROT_??? */" :
77			"0xca7500 /* PROT_??? */" },
78		{ ARG_STR(PROT_READ|PROT_WRITE|0xface00) },
79	};
80	static const kernel_ulong_t pkeys[] = {
81		0,
82		-1LL,
83		(kernel_ulong_t) 0xface1e55,
84		(kernel_ulong_t) 0xbadc0ded00000001,
85	};
86
87	long rc;
88	unsigned int i;
89	unsigned int j;
90	unsigned int k;
91	unsigned int l;
92
93	for (i = 0; i < ARRAY_SIZE(ptrs); i++) {
94		for (j = 0; j < ARRAY_SIZE(sizes); j++) {
95			for (k = 0; k < ARRAY_SIZE(prots); k++) {
96				for (l = 0; l < ARRAY_SIZE(pkeys); l++) {
97					rc = syscall(__NR_pkey_mprotect,
98						     ptrs[i], sizes[j],
99						     prots[k].val, pkeys[l]);
100					printf("pkey_mprotect(%s, %llu, %s, %d)"
101					       " = %s\n",
102					       sprintptr(ptrs[i]),
103					       (unsigned long long) sizes[j],
104					       prots[k].str, (int) pkeys[l],
105					       sprintrc(rc));
106				}
107			}
108		}
109	}
110
111	puts("+++ exited with 0 +++");
112
113	return 0;
114}
115
116#else
117
118SKIP_MAIN_UNDEFINED("__NR_pkey_mprotect");
119
120#endif
121